n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 15 |
3 | 82 |
4 | 477 |
5 | 2901 |
6 | 18235 |
7 | 117555 |
8 | 773085 |
9 | 5166478 |
10 | 34987170 |
11 | 239570655 |
12 | 1655933060 |
13 | 11538839130 |
14 | 80971109712 |
15 | 571702698185 |
16 | 4058556404958 |
17 | 28951715755830 |
18 | 207424064434502 |
19 | 1491898838023884 |
20 | 10768487956456506 |
21 | 77977009814421534 |
22 | 566310026687320290 |
[1,3,15,82,477,2901,18235,117555,773085,5166478, 34987170,239570655,1655933060,11538839130, 80971109712,571702698185,4058556404958, 28951715755830,207424064434502,1491898838023884, 10768487956456506,77977009814421534, 566310026687320290] |